Run results for: JSON.stringify vs structuredClone, large array

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/143.0.0.0 Safari/537.36

Browser: Chrome 143

Operating system: Windows

Device Platform: Desktop

Date tested: 8 months ago

structuredClone

36/s

JSON.stringify

7/s

View exact numbers

Test name	Executions per second
✓ structuredClone	36 Ops/sec
JSON.stringify	7 Ops/sec

Script Preparation code:

const largeArray = new Array(1e6).fill({ key: "value" });

var myCopy = null;

Tests: